Patent NZ-730463-A (NZ)
Title: Method and system for learning call analysis
Inventor: TAYLOR MATTHEW
IPC: G10L17/00
Filed: 2013-08-30
Abstract: Answering machine detection (AMD) is critical to contact centers utilizing automated dialer systems because most calls placed often result in pre-recorded audio from a machine or other automated system. Every audio recording or other automated system that is incorrectly detected as a live speaker may be routed to an agent for handling. As a result, agents may begin to assume an audio recording is at the other end of the call and mistakenly hang up on a live person, sound surprised, lose their train of thought, etc. AMD employs various signal processing algorithms to classify the entity that picks up a communication into categories, for example, such as answering machines, or recorded audio, and live speakers. The accuracy of these algorithms may depend on various parameters and requires trading off AMD rate and live speaker detection (LSD) rate. For example, biasing an autodialer towards a high AMD rate may result in more live speakers being classified incorrectly as recorded audio and hung ­up on by the autodialer and vice-versa. Some countries as well as applications, such as high-value dialing for example, do not allow or utilize AMD because of false positives. In another example, an autodialer operation may contact the same phone number multiple times in a day to try and reach a live speaker. By learning the fingerprint of a specific audio recording, the autodialer may prevent an audio recording from being repeatedly routed to an agent. If an audio recording associated with a contact is altered, however, the system may have to relearn the fingerprint of the audio recording the next time that number is dialed. By learning about audio recordings that are missed, learning call analysis, in one embodiment, allows contact centers using automated dialers to turn down their AMD bias and turn up their LSD bias. As a result, contact centers may be able to maximize the number of live speakers that are routed to agents. The contact center may become aware that the increased number of audio recordings that initially come through to agents. The audio recordings may be marked as a recording and may subsequently not be re-routed to agents when they are recognized. To overcome this exemplary problem, the inventors have developed a system and method for learning call analysis. An example / embodiment of this system is one that is used for call learning in a communication system, wherein the telecommunication system comprises at least an automated dialer, a telephony service module, a database, and a media server operatively coupled over a network, the method comprising the steps of: a. selecting, by the automated dialer, a contact from the database, the contact being associated with a telephone number and one or more acoustic fingerprints; b. retrieving, by the telephony service module, from the database, the one or more acoustic fingerprints and the telephone number associated with the contact; c. initiating, by the automated dialer, a communication with the contact based on the telephone number, the communication generating audio; d. analyzing, by the media server, the audio for matches to any of the one or more of the acoustic fingerprints; and e. routing, by the telephony service module, the communication based on the analyzing step, wherein the communication is handled in a first manner in the event that none of the one or more acoustic fingerprints are present in the audio and the communication is handled in a second manner in the event that at least one of the one or more fingerprints is present in the audio.